A249803 - cp's OEIS frontend

A249803 Take smallest prime q such that n(q-1)-1 is prime (A249802), that is, the smallest prime q so that n = (p+1)/(q-1) with p prime; sequence gives values of p; or -1 if A249802(n) = -1.

n	a(n)
1	3
2	3
3	2
4	3
5	19
6	5
7	13
8	7
9	17
10	19
11	43
12	11
13	233
14	13
15	29
16	31
17	67
18	17
19	37
20	19
21	41
22	43
23	137
24	23
25	149
26	103
27	53
28	167
29	173
30	29
31	61
32	31
33	131
34	67
35	139
36	71
37	73
38	37
39	233
40	79
41	163
42	41
43	257
44	43
45	89
46	827
47	281
48	47
49	97
50	199
51	101
52	103
53	211
54	53
55	109
56	223
57	113
58	347
59	353
60	59
61	1097

[3, 3, 2, 3, 19, 5, 13, 7, 17, 19, 43, 11, 233, 13, 29, 31, 67, 17, 37, 19, 41, 43, 137, 23, 149, 103, 53, 167, 173, 29, 61, 31, 131, 67, 139, 71, 73, 37, 233, 79, 163, 41, 257, 43, 89, 827, 281, 47, 97, 199, 101, 103, 211, 53, 109, 223, 113, 347, 353, 59, 1097]

cp's OEIS Frontend

A249803 Take smallest prime q such that n(q-1)-1 is prime (A249802), that is, the smallest prime q so that n = (p+1)/(q-1) with p prime; sequence gives values of p; or -1 if A249802(n) = -1.

Table of values

List of values